At Nouryon, we want address the most compelling issues faced by production engineers and service providers. The production, separation and purification of crude oil and gas need to be achieved not only safely but also quickly, economically, and in compliance with the regulatory restrictions of the operator's environment.

Nouryon provides an extensive range of formulated additives that can address most of the compelling issues confronting production engineers and service providers on a daily basis, including:

  • Demulsifiers
  • Corrosion inhibitors
  • Scale inhibitors
  • Paraffin control
  • Biocides
  • Water clarifiers and de-oilers
  • Asphaltene inhibitors

Demulsifiers

The severity of an emulsion is unique to each reservoir and may even vary from well to well. As such, it is necessary to develop demulsifier blends specifically targeted at fluids produced. Nouryon Witbreak demulsifier products should be considered as concentrated raw materials, or intermediates, for the preparation and/or formulation of oilfield demulsifiers and dehydrating chemicals.

Due to synergism, blends of intermediates from different chemical groups make better demulsifiers than blends using intermediates from the same family of compounds. Some demulsifier bases have special properties that provide very good blending characteristics.

This is the case with the highly oil-soluble (low RSN) polyglycols. Blended with oxyalkylated resins, we have developed excellent demulsifier formulations for the oil industry. Other effective combinations include oxyalkylated resins blended with polyols, diepoxides or polyacrylate-based intermediates.

Water Clarifiers / Deoilers

The performance of separation systems can be significantly improved using chemical flocculating agents. The flocculants — referred to interchangeably as deoilers (due to the removal of the oil) or water clarifiers (due to improvement in water quality) — are designed to function in the high salinity brines common in produced waters.

Nouryon’s products include a range of natural and synthetic materials to meet the performance and environmental needs of the market. We also manufacture dithiocarbamate products which are also known to produce in-situ, iron-linked polymer complexes which function as effective oilfield deoilers.

Biocides

Nouryon offers a dedicated range of non-oxidizing surface-active organic biocides. The method of action is the adsorption onto cell walls where they disrupt the typical function of the cell. Whilst this kill mechanism may not allow them to be as fast as oxidizing biocides, they are less corrosive, and can in fact act as corrosion inhibitors, particularly the quaternary ammonium compounds.

Our biocides are specific to the regulatory body that approves the biocide for use. In countries where a similar regulatory structure is not in place, the adoption of the practice of foreign regulators may be suitable.

Selection of the right biocide will be dependent upon the organisms to be treated, the regulatory approvals applicable and the type of treatment regime proposed. Many of the biocide chemistries mentioned become inactive once they reach the surface environment and are readily biodegraded to benign metabolic products.

Corrosion inhibition

A broad range of essential ingredients can be used to tackle sweet and sour oilfield corrosion. Nouryon range of products can provide corrosion inhibition in a variety of forms, including oil soluble, oil soluble/water dispersible and water soluble.

Various methods of corrosion control are employed in the field, but film-forming corrosion inhibitors are one of the most commonly used. The hydrophobic tails of the surfactants pack together to create a hydrophobic layer, minimizing contact between the water and pipe and reducing the corrosion potential.

Scale inhibition

Nouryon offers a wide range of specialized scale inhibitors that allow the treatment of all common scales in a range of production conditions. We have assessed the performance of these products under a series of standard conditions to give indicative performance, as well as providing indicative physical property characteristics for these materials.

However, the performance and action of all scale inhibitors is highly dependent upon the conditions of application and it is suggested that scale inhibitor screening be performed under representative field conditions.

Paraffin inhibition

Nouryon has developed a range of high-performance chemical additives to help tackle even the most challenging paraffinic crudes and condensates either in paraffin remediation or continuous treatment regimes.

These products fall into three categories:

  • Paraffin dispersants: surfactants used either in solvent treatments of pre-existing deposits or in continuous application to keep paraffin crystallites suspended in the solvent/crude and flushed out of the system without depositing.
  • Paraffin inhibitors: oil-soluble polymers that bond with paraffins to prevent them from bonding with each other and forming crystalline structures. This inhibits the formation of paraffinic deposits by keeping paraffins in solution.
  • Pour-point depressants: used to limit wax gelling, usually induced by cold temperature exposure, by interfering with the crystallization process and keeping the bulk fluid mobile.

Asphaltene Inhibition

Precipitation of asphaltenes is usually a result of destabilization of the solubility of high molecular weight components in the oil. The source of destabilization is typical of production conditions (i.e. pressure decline, pH change, crude mixing etc.)

If non-chemical techniques cannot be employed to eliminate an asphaltene problem, then chemical inhibitors must be sought. Nouryon has created a specialty inhibitor product to help with this specific production problem.